Multiple drill head



April 1951 T. G. LINDERME 2,549,318

MULTIPLE DRILL HEAD Filed July 21, 1947 3 Sheets-Sheet l 75 l Em h-s: 5-2 I INVEN TOR. 22 500025 d/n flfe/vf,

fiTTOP/VEY April 17, 1951 T. s. LINDERME MULTIPLE DRILL HEAD Filed July 21, 194'! 3 Sheets-Sheet 2 FIGS).

| I INVENTOR. 5 I fisopae: a Z/A flfG/ZE H lluao WM HTTUP/VEX April 17, 1951 T. .G. LINDERME MULTIPLE DRILL HEAD 3 Sheets-Sheet 3 Filed July 21, 1947 IN V EN TOR.

Patented Apr. 17, 1951 UNITED STATES PATENT OFFICE MULTIPLE DRILL HEAD Theodore G. Linderme, Detroit, Mich.-

Application July 21, 1947, Serial No. 762,273

My invention relates to a new and useful improvement in a multiple drill head adapted for mounting on a drill press or for being constructed on a drill press as an-integral part thereof.

It is an object of the invention toprovide a multiple drill head of this class which will be highly efficient in use, economical of manufacture and easily and quickly mounted in position and adjusted to its various positions.

Another object of the invention is the provision of a multiple drill head having aplurality of driving spindles relatively movable to each other so that the drills, each of which may be driven by one of the driving spindles, may be adjusted angularly of each other and as to the space between each other, thus making it possible to drill a plurality of holes simultaneously regardless of the spacing or relative position of the holes to be drilled. I

Another object of the invention is the provision in a multiple drill head of a pair of relatively swingable housings, each of which carries a plurality of drill spindles, and each of which drill spindles is relatively movable in the housing which carries it.

Another object of the invention is the provision in a multiple drill head of a plurality of drill spindles, each of which may be moved to inoperative position at will so that when one is moved to inoperative position, the others may be operated.

Another object of the invention is the provision in a multiple drill head of a construction which will permit a maximum adjustment and maneuverability of the various drill spindles.

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made in the detail of structure illustrated without departing from the invention and it is intended that such shall be embraced within the scope of the claims which form a part hereof.

Forming a part of this specification are drawings in which,

Fig. 1, is a front elevational view of the in- 6 Claims. (01. 77-24) Fig. 6, is a fragmentary, sectional view taken on line'66 of Fig. 3,

Fig. 7, is a fragmentary, sectional view taken on line '!-1 of Fig. 3,

vention with parts broken away and parts shown Fig. 8, is a sectional view taken on line 8-8 of Fig.7, 1

Fig. 9, is a view taken on line 9 -9 of Fig. 5,

Fig. 10, is a sectional view taken on line l'0ll of Fig. 9,

Fig. 11, is a sectional view in fragment taken on line I ll I of Fig. 3.

In the drawings, I have illustrated the inventioncomprising a retaining collar [6 carrying at its lower end the outwardly projecting flange l5 and adapted for embracing the quill ll of a drill spindle l9. This collar I6 is split at its upper end and held in clamping relation about the quill IT by means of the bolts I8. The quill may be raised and lowered relatively to the spindle l9 by means of the rotatable shaft 29. The flange I5 is secured by the bolts 22 to a supporting plate 23.. This plate 23 is provided with the inwardly projecting ribs 24, 25, 26 and 2! which serve as re-enforcement members.

The plate 23 is provided with the axially directed flange 28 which projects downwardly from the plate 23 and. which is provided with an inwardly projecting rib 29 engageable in the groove 30 formed in the housing wall 3|. In the present invention I provide a pair of these housings which have the housing wall 3| and all of the parts of these housings are identical and the contents thereofare identical so that a description of one will suffice for a description of both. Formed in the plate 23 is a pair of spaced apart, outwardly positioned, arcuate slots 32 and 33. An inwardly positioned, arcuate slot is also provided and one of these slots is indicated at 34 in Fig. 3. Extended through these slots are bolts 35 and 36 which thread into the top wall 31 of the housing and serve as a means for supporting the housing on the supporting plate 23. This plate 23 is provided with the downwardly projecting hub 38 which embraces the bushing 39 in which the drive shaft 2 la of the drill rotates. The housings may swing on the supporting plate 23 about the axis of the drive shaft 2la, the arcs 32, 33 and 34 being struck on the center of the drive shaft 2 la.

Mounted on the lower end of the drive shaft 2m and rotating in unison therewith is the dliViIlg gear 2lb. The gearing in each of the housings is identical so that a description of one will suffice for the structure contained within the other housing. .The driving gear 2!!) meshes with the idler gear 40 which is mounted on the 3 stub shaft 4| which is threaded into the hub 42 extending downwardly from the top plate or wall 37 of the housing. This idler gear 40 meshes with the gear 43 which is mounted on the shaft 44 (see Fig. 6 and Fig. 4) This shaft 44 is threaded into the hub or boss 45 projecting downwardly from the top wall 31. As shown in Fig. 6, the drivin gear 39 projects through one of the side walls 3i of each of the housings so this driving gear projects into each of the housings.

The gear 43 meshes with the gear 46 (see Fig. 4 and Fig. '7) which is mounted on the shaft 41 and which extends through the sleeve 48 having the radially directed flange 49 at its upper end engaging in a recess 50 formed in the upper face of the plate which rests upon the inner surface of the bottom 55 of the housing. This plate 5| also overlies the plate 53 which is circular in formation and which seats in the circular opening 54 formed in the bottom 55 of the housing and may rotate therein. Formed in this circular plate 53 is a slot 52 through which the sleeve 48 nr i As shown in Fi 5, the bottom 55. of the housing is held in position relatively to the wall 3! by means of the screws 56. As shown in Fig. 7, I provide a block 51 having a portion 59 through which the sleeve 48 projects. This portion 59 is provided With a recess 60 for receiving a nut 5! which may be threaded on the lower end of the sleeve 48. Fixedly mounted on the lower end of the shaft 4'! is a gear 52.. meshing with a gear 53, fixedly mounted on the drill spindle, 54 which is journaled in the bearings 65,, and provided on its upper end with a nut 66 threaded thereon. This nut 65 serves to retain the spindle $4 in position and also serves as a means for adjusting the same longitudinally or axially. As shown in Fig. 9, the nut 55 iS provided with a plu rality of peripheral notches 58. Secured, as shown in Fig. 10, by meansof the screw 13. to the upper end 67 of the shaft 54 is a pair of spring plates ill and H having the downwardly projecting portions i2 which serve to engage in the notches 69 and prevent rotation of the nut 66, thus preventing undue threading of the nut on the threaded portion 51 of the spindle 54. Carried by the lower end of the spindle B4 is a chuck 14 in which a drill may be attached in a well known manner.

The construction is such that when the drive shaft 2la is rotated, the spindle 64 will be rotated and also the gear 45 which is in mesh with the gear 43. Upon loosening the nut 6|, the block 51 may be swung on the sleeve 48 as an axis so that the position of the spindle may thus be adjusted, moving in a predetermined arc. When the proper adjustment has been obtained, the nut 51 may be tightened to securely bind the parts in fixed relation. Another adjustment which may be made upon loosening the nut is a bodily movement of the block 51, the sleeve 48 and the plates 5!, the sleeve 48 moving in the slot 52. As shown in Fig. 8, this slot 52 has an outward bulge at one end and when the sleeve 48 is moved to the outer end and then moved into this bulged portion, the gear 45 will be moved out of mesh with the gear 43, thus rendering the spindle 64 inoperative for use while in that position.

As shown in Fig. 4, a gear 46a, also meshes with the gear 43. This gear 45a is mounted and functions and operates exactly the same as the gear 45 so that the various parts illustrated in Fig. 7 relatively to the gear 45 are also descriptive of the parts associated with the gear 46a and driven 4 by this gear so that there is thus provided a description of a pair of drill spindles in the housing.

As shown in Fig. 4, a gear 75 also meshes with the gear 40 and as shown in Fig. 5, this gear i5 is fixedly mounted on the drill spindle 16 which projects through the bushing 11. This bushing 11 also projects through the block 18 in the lower end of which is mounted a bearing 19 for the spindle 16 which carries the chuck at the lower end to which the drill may be attached. Formed in the block 18 is a groove or recess to accommodate the nut 82 threaded on the lower end of the stud 83 which projects through the slot 84 formed in the bottom 55 and which also projects through the block 85 positioned on the inner face of the bottom 55. The stud 83 is provided with the head 83a which bears against the inner face of the block 85. This block 85 is provided with the downwardly projecting sleeve 85 which embraces the bushing 11 and which extends through a slot 86a formed in the bottom 55. Threaded on the upper end of the spindle I5 is a nut 81 for adjusting the same longitudinally or axially and which serves to retain the gear 15 in engagement with the bearing 15a. The construction is such that when the gear 43 is rotated, the spindle 16 will be rotated so long as the gear 15 is in mesh with the gear 40. By loosening the nut 82, the block 18 and its associated parts may be moved, the stud 83, riding in the slot 84 and the spindle. 16. and its associated parts riding in the slot 85a so that the gear 15 may be moved out of mesh with the gear 40.

In this manner, I provide a multiple drill head having a pair of housings which are swingable relatively to each other and each of which is shown to carry three drill spindles. In Fig. 3, I have shown the housings moved into approach to each other, the adjacent Walls contacting. These housings may be swung outwardly, one to the left and one to the right to the limit of the slots 32 and 34 and the swinging of these houses in no m nner n erferes with the adjustment or the swinging of. the various, drill spindles in each housing. In Fig. 3, I have shown in dotted lines, two of the drill Spindles or the gears for driving the same swun to lie in alignment with the gear 15 which is in axial, alignment with the drill spindle 16. Consequently, when the variDuS. parts; are moved into. the. position thus shown, the six drill spindles would be in alignment witheach other and the spacing would be a predetermined spacing. By virtue of the various adjustments, and movements which have been described, it becomes possible within the limits of each of the housings and within the limits of relative swinging of the two housings, to adjust these six drill spindles into almost any relative position with any desired spacing. The adjustment and the spacing is easily and quickly effected so that, as experience has shown, a drill head constructed in this manner is most eihcient and" adjust end play on the member 64. It will also be noted that the spindle 64 may thus be removed entirely from its bearing if desired. It will also be noted that the block 5'l may be removed from the sleeve 48 upon unsetting the nut 6| from the sleeve 48, without, in any manner, disturbing the mounting of the sleeve 48 or the shaft or spindle 41 which extends therethrough. Similarly, by removing the plug I08, which is accessible through the opening I01, formed in the flange IS, the screw, which threads into the spindle 16, may be removed so that ,the nut 81 may be either tightened or loosened as desired so that the nec-' essary adjustments may thus be made and removal and replacement of the spindle 16 effected when desired or necessary. v

What I claim as new is; r

-In a multiple drillheadof the class described, a housing; a bottom on said housing, said bottom having an opening formed therein; a plate positioned in said opening and swingable relatively to said bottom, said plate having a pair of slots formed therein; a shaft projected through each of said slots and depending at one end below said bottom; a support rotatably mounted on each of said shafts and having a supporting portion extending radially outwardly therefrom; a drill spindle rotatably mounted on said supporting portion and depending. therefrom inparallel relation to said shafts; gearing for driving said drill spindles upon rotation of said shafts; a gear on each of said shafts; a driven gear for rotating said last named gears, said last named gears being movable into and out of registration with said driven gear upon mov ments of said shafts in said slots; and a clamping structure for clamping said shafts against movement in said slots and clamping said support against rotation about the shaft.

2. In. a multiple drill head of the class described, a housing; a bottom on said housing, said bottom having an opening formed therein; a plate positioned in said opening and swingable relatively to said bottom, said plate having a pair of slots formed therein; a shaft projected through each of said slots and depending at one end below said bottom; a support rotatably mounted on each of said shafts and having a supporting portion extending radially outwardly therefrom; a drill spindle rotatably mounted on said supporting portion and depending therefrom in parallel relation to said shafts; a gearing for driving said drill spindles upon rotation of said shafts; a gear on each of said shafts; a driven gear for rotating said last named gears, said last named gears being movable into and out of registration with said driven gear upon movements of said shafts in said slots; and a clamping structure for clamping said shafts against movement in said slots and clamping said support against rotation about the shaft; said plate being swingable about the axis of said driving gear.

3. In a multiple drill head of the class described, a housing; a bottom on said housing, said bottom having an opening formed therein; a plate positioned in said opening and swingable relatively to said bottom, said plate having a pair of slots formed therein; a shaft projected through each of said slots and depending at one end below said bottom; a support rotatably mounted on each of said shafts and having a supporting portion extending radially outwardly therefrom; a drill spindle rotatably mounted on said supporting portion and depending therefrom in parallel relation to said shafts; a gearing for driving said drill spindles upon rotation of said shafts; a gear on each of said shafts; a driven gear for rotating said last named gears, said last named gears being movable in and out of registration with said driven gear upon movements of said shafts in said slots; and a clamping struc;

--ture for clamping said shafts against movement in said slots and clamping said support against rotation about the shaft; said plate being swingable about the axis of said driving gear; an idler gear rotating on an axis parallel to the axis of said driven gear and meshing therewith; a driving gear for rotating said idler gear, said bottom having a slot formed therein outside of said opening; a third support overlying said last named slot; a supporting portion on said third support extending radially therefrom; a stud engaging in a slot formed in said bottom and projected through saidlast named supporting portion; a nut on said stud for threading thereon and securing said last named supporting portion in fixed relation to said bottom, said last named supporting portion being rotatable about said stud; a third drill spindle projected at one end through said third support and engaging in said first named slot in said bottom; a clamping structure for clamping said support in fixed relation to said bottom and releasable to permit swinging of said third support on said stud as an axis; and a gear fixedly mounted on said third named drill spindle meshing with said idler gear and movable into and out of meshing therewith upon movement of said third named spindle in said first named slot in said bottom.

4. In a multiple drill of the class described, a driving shaft; a gear fixedly mounted on said driving shaft; a supporting sleeve embracing said shaft and stationary relative thereto; a pair of housings swingably mounted on said supporting sleeve swingable on the axis of said shaft as a center; an idler gear in each of said housings meshing with said driving shaft; a driven gear in each of said housings meshing with the idler gear therein; a plate associated with each of said housings and swingable relatively thereto about the axis of said driven gear; a pair of drill spindles carried by each of said plates and extending exterior of said housing; a gear associated with each of said spindles and adapted for meshing with said driven gear for actuating the rotation of the spindles, said spindles being swingable relatively to the housing on the axis of said actuating gear, said actuating gear being bodily movable radially relatively to said plate for movement into and out of mesh with said driven gear and a clamping mechanism for clamping said actuating gear and said spindle in fixed relation to said housing.

5. In a multiple drill of the class described, a driving shaft; a gear fixedly mounted on said driving shaft; a supporting sleeve embracing said shaft and stationary relative thereto; a pair of housings swingably mounted on said supporting sleeve swingable on the axis of said shaft as a center; an idler gear in each of said housings meshing with said driving shaft; a driven gear in each of said housings meshing with the idler gear therein; a plate associated with each of said housings and swingable relatively thereto about the axis of said driven gear; a pair of drill spindles carried by each of said plates and extending exterior of said housing; a gear associated with each of said spindles and adapted for meshing with said driven gear for actuating the rotation of the spindles, said spindles being swingable relatively to the housing on the axis of said actuating gear, said actuating gear being bodily movable radially relatively to said plate for movement into and out of mesh with said driven gear and a clamping mechanism for clamping said actuating gear and said spindle in fixed relation to said housing, and a clamping mechanism for clamping said swingable plates against swingable movement of its housing.

6. In a multiple drill of the class described, a driving shaft; a gear fixedly mounted on said driving shaft; a supporting sleeve embracing said shaft and stationary relative thereto; a pair of housings swingably mounted on said supporting sleeve swingable on the axis of said shaft as a center; an idler gear in each of said housings meshing with said driving shaft; a driven gear in each of said housings meshing with the idler gear therein; a plate associated with each of said housings and swingable relatively thereto about the axis of said driven gear; a pair of drill spindles carried by each of said plates and extending exterior of said housing; a gear associated with each of said spindles and adapted for meshing with said driven gear for actuating the rotation of the spindles, said spindles being swingable relatively to the housing on the axis of said actuating gear, said actuating gear being bodily movable radially relatively to said plate formovement into and out of mesh with said driven gear and a clamping mechanism for clamping said actuating gear and said spindle in fixed relation to said housing and a clamping mechanism for clamping said swingable plates against swingable movement of its housing and a mechanism forsecuring said housings in fixed relation to the supporting sleeve.

THEODORE G. LINDERME.

REFERENCES CITED The "following references are of record inthe fil'e' of'this patent: v

UNITED STATES PATENTS 

